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If adult children help pay for household expenses, take over physically demanding chores, and care for their aging parents who get sick or need assistance, child-parent relationships generally
Judging from its unit W/m · K, can we define thermal conductivity of a material as the rate of heat transfer through the material per unit thickness per unit temperature difference? Explain.
Determine the Lorentz factor for the relative motions of the spaceship and earth-star system. How far away is the star system according to the astronaut just after initially reaching cruising speed. How long does the astronaut travel according to the..
A 769-kg satellite is in circular orbit around the Earth and moving at a speed of 1.11 km/s. How much work must be done to move the satellite
Gas is confined in a tank at a pressure of 11.7 atm and a temperature of 30.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 77.0°C, what is the pressure of the gas remaining in the tank? atm
A heat engine operates between two reservoirs whose temperatures are 139.3°C, What is the maximum efficiency of this engine
The coefficient of friction is 0.3. The Initial speed is 3 m/s. How far does it slide down along the path before it comes to rest
q1. if air drag is negligibly small how fast is sequoia cone moving while it reaches the ground if it dropped from the
a pendulum is made of a uniform stick of length l. it is allowed to swing in a vertical plane. where should the pivot
A spring with spring constant 250 N/m is compressed by 0.13 m and then used to propel a 0.035-kg ball directly upward. If needed, use g = 10 m/s2. what is the height of the ball at it's peak
A 150g ball has a kinetic energy 27.2J. A) What's the magnitude of its momentum? Express your answer with the appropriate units. B) Use your answer to find its speed. Express your answer with the appropriate units.
determine the object's average velocity over the time interval
As you drive down the road at 18 m/s, you press on the gas pedal and speed up with a uniform acceleration of 1.17m/s2 for 0.65 second. find their angular displacement during this period of acceleration
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